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← ScienceWhich phenomenon limits the rigidity in crosslinked polymer networks?
A)Chain entanglements hindering network deformation
B)High crosslink density inducing brittleness
C)Thermally activated chain segment motion✓
D)Increased surface hydrophobicity weakening bonds
💡 Explanation
Thermally activated chain segment motion limits rigidity because increased temperature enhances bond vibrations, reducing the material's resistance to deformation via increased molecular flexibility. Therefore chain motion causes flexibility, rather than structural breakdown under stress or weakened surface molecular interactions.
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